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martjoe

1972 620 Pickup Project/Electrical Help

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Hello Everyone:

Looking for some closeup under the hood photos of a 72/73 Datsun 620 pickup truck. The truck was build in 72 but has the 73 body style. My son had the truck for a few years and painted the engine compartment. Everything including all the wiring is now yellow! Several years back the engine was removed with none of the wiring marked. I do have a wiring diagram which is helping a great deal. Photos might help uncover some of the mystery wires. The forum and members have been great and very helpful. Hope you guys & gals can help with this one!

Thanks

Joe

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New models introduced part way through the model year are placed with the next model year. A '73 620 could have been built as early as Feb or March '72.

 

'73 and '74 were very similar wiring wise with perhaps the plastic plugs differing.

 

 

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Thank you for the info! Can I send you a photo of a wiring pig tail I took today? I know where 1 wire goes but not sure about the other 3. Looks like 1 goes to the Carburetor.

Joe

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There will be up to 5 wires to the carb.

 

These two are usually bundled together and may have a black sheath covering them.

One for the electrically heated choke. Blue wire

One for the idle cut solenoid. Red wire

 

One for the BCDD solenoid. Yellow/Red stripe. Nay not be on the earliest 620.

 

Throttle position switch located on the throttle. 

One Blue/Red 

One Blue/Yellow

 

 

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Thank you Farmer for the photos. I can use those as a reference point. Looks like the same engine except for Color?

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Take some lacquer thinner on a rag and whipe down the painted wires.   Do this in a well ventilated area and away form any heat source, no smoking.  This should clean off the paint and show the actual color of the wire.

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Hello Charlie

Good advise! I've been untapping each strand back a little to get to the colors. Some of them are not tapped so that would be a good solution. Having some trouble finding some parts I need. Looking for the jack bar. I have the handle and found a jack. I also would like to replace the metal door step on each side of the cab. I tried eBay and Craig's list with no luck. Any ideas would be appreciated.

Thanks

Joe

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